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______________________ O&M Strategy for Better Yield _____________________________

______________________ O&M Strategy for Better Yield _____________________________. Design & Engineering . Local Climate & Soil Strata Inverter Room Foundation Design. Inverter Ventilation System Design. Module Mounting Structure & its Foundation Design.

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______________________ O&M Strategy for Better Yield _____________________________

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  1. ______________________ O&M Strategy for Better Yield _____________________________

  2. Design & Engineering • Local Climate & Soil Strata • Inverter Room Foundation Design. • Inverter Ventilation System Design. • Module Mounting Structure & its Foundation Design. • DC/AC Cable Sizing and Trench Design. • Design of Earthing & Lightning Protection System. • Area Drainage. • System Requirement/Redundancy • Spare Cable Feeders. • Radial Feeder Vs Ring Main. • Evacuation Facility. • Switchyard Bus Bar Scheme. • Power Transformer Capacity.

  3. Design & Engineering • Grid Parameters / Network Study. • Voltage Profile and Grid Availability at Utility Sub-Station. • Protection Schemes employed at Utility Sub-Station. • Telemetry Scheme for Real Time Data Transmission. • Selection of BoS Components/Equipments. • Cost Vs Reliability/Durability/Efficiency.

  4. Procurement & Construction • Procurement • Vendor/Sub-Vendor Selection. • Scope Dilution/Bifurcation. • Compliance of QA System during Manufacturing. • Construction • Qualified Engineers and Supervisors. • Milestones with defined timelines/duration of activities. • Adherence to Protocols. • Field Quality Assurance/Third Party Inspections/Audits. • Project Handover • Preparation and Liquidation of Punch Points vis-a-vis Project Specification/Scope of Work/Approved Drawings. • Copies of Approved Drawings/As-Built Drawings/Documents/Equipments/O&M Manuals. • Test Certificates & Commissioning Documents.

  5. Procurement & Construction • Project Handover • Mandatory & Recommended Spares as per OEM Supplier. • Statutory Compliances. • Warranty of Equipments/Materials.

  6. Operation • SOP. • Asset List with details of Capital Equipments, Serial No., Make, Year of Manufacturing, Model No., RFID tag etc. • OEM Service Support. • AMC / Service Contract for Equipments/Systems not Covered in OEM Service Warranty. • Required Tools, Measuring & Testing Equipments, PPE. • Environment, Health & Safety Compliances & Reporting. • Insurance Policies. • Statutory Compliances like CEIG, CGWB, PCB, Local Bodies, Safety etc.

  7. Operation • Operation Interfaces : String Monitoring Units, Circuit Breakers, Isolators, Metering and Protection Equipments, Lightning Arrestors, Display Instruments/Indication Lamps, Annunciation Facia & Alarms, Energy Meters (ABT/Trivector), Temperature Sensors, C&R Panels, RTCC Panels, Smoke Detectors, Fire Protection System, PLCC System etc. • Safe Start Up & Shutdown/Isolation. • Grid Voltage/Frequency Monitoring. • Alarm & Trip Settings of Relays for Sensitivity, Selectivity, Reliability & Safety. • OLTC/OCTC of Power/Inverter/Auxiliary/Isolation Transformers to maintain safe operating voltages. • Real Time Data Communication to SLDC. • Understanding of relay indications and fault identification. Safe isolation of Faulty Component/equipment/element. • Disturbance Recording in case of Faults for Analysis. • Log Book/Record keeping. • Auxiliary Power/DC System Healthiness. • Earth Resistivity and Continuity Checks.

  8. Operation • INVERTERS • Central/String. • Ventilation System. • Details of SCB/SMU, Strings, Nos/Type/Make of Modules, Wattage, Connected DC Power, Voc, Isc, V-I Characteristic Curves. • Control/Auxiliary Power Source (UPS). • DC/AC/Communication Cables Termination. • Earthing. • Settings-ACB, Temperature ( Cabinet, Heat Sink etc). • LVRT Feature. • FRT Feature. • Error Indications. • Cable Entrance Sealing. • Protection from Rain, Condensation, Moisture & Dust. • Spares.

  9. Operation • DC FIELD • Damaged Modules. • Damaged Connectors/Cables. • Strings Healthiness. • DC Fuse Healthiness. • SMU Communication. • SCADA • Weather Monitoring Station Data. • Inverter Alarms/Trips & Monitoring. • String Monitoring through current imbalance. • AC Power. • DC Power & DC Current & Voltage. • Module Temperature Monitoring. • Inverter Heat Sink/Cabinet Temperature Monitoring. • Inverter Room Temperature Monitoring.

  10. Maintenance • PREVENTIVE • Schedule of Equipment Maintenance as per OEM recommendations. Fortnightly/Monthly, Quarterly/Half Yearly, Yearly. • Availability of Tools, Safety Equipments & Consumables. • Thermal Scanning for HOT SPOTS Identification. • Testing. • Testing Results Validation Vis-a-Vis Previous Factory/Field Test Reports. • Cleaning, Tightening, Oil Filling. • Replacement of Worn Out Components, Damaged Cables/Connectors/Lugs/Termination Kits. • Authorization of persons to receive and issue Permit to Work. • Timely control of oil leakages. • Walk through/Patrolling of overhead transmission lines.

  11. Reporting • Daily Generation Report. • Generation Loss Report. • Auxiliary Consumption Report. • Break Down Report. • Incidence Reporting. • Module Cleaning Report. • Preventive Maintenance Activity Report. • Breakdown Maintenance Activity Report. • Spares Inventory MIS. • Daily Water Consumption Report. • CUF/PR. • Pollution Control Board –Storage and Disposal of Used Batteries and Transformer Oil.

  12. THANK YOU

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